Security Incidents mailing list archives

Re: DHCP or Probe?


From: "Clint Bodungen" <clint () secureconsulting com>
Date: Thu, 11 Mar 2004 10:50:12 -0600


 I'm getting the following traffic about every second to my cable modem (My
IP,
not a broadcast address.  UDP packets looking for port 67... but from a "10
dot"
address.  Is this the typical chatty Roadrunner DHCP probes or is it a worm
probe?
The reason I find this odd is because the source address here is from a "10
dot" class A.
I'm not on PTP... I have a public address... so this is either from a
spoofed address,
a misconfiguration by one of my cable modem neighbors, or worse... a
misconfiguration by RR.

Wed, 2004-03-10 14:43:33 - Device Receive UDP Packet -
Source:10.50.192.1,67,WAN - [Drop] Destination: [My IP Address]
Wed, 2004-03-10 14:43:33 - Device Receive UDP Packet -
Source:10.50.192.1,67,WAN - [Drop] Destination: [My IP Address]
Wed, 2004-03-10 14:43:35 - Device Receive UDP Packet -
Source:10.50.192.1,67,WAN - [Drop] Destination: [My IP Address]
Wed, 2004-03-10 14:43:35 - Device Receive UDP Packet -
Source:10.50.192.1,67,WAN - [Drop] Destination: [My IP Address]





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